Oil supply device for compressor, compressor, and refrigeration equipment

Patent metadata

Field	Value
Publication number	US-12546301-B2
Application number	US-202218720299-A
Country	US
Kind code	B2
Filing date	Nov 15, 2022
Priority date	Dec 17, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

The present application discloses an oil supply device for a compressor, a compressor, and refrigeration equipment. The oil supply device for a compressor includes: a piston cylinder with an inner chamber, a piston, and an outer housing; the outer housing includes a housing body and a separator, the separator has a separation board and a partition plate, forming an oil chamber between the separation board and the bottom of the housing groove, the partition plate divides the oil chamber into an oil intake chamber and an oil discharge chamber; one end of the piston cylinder extends into the housing groove. This embodiment conveniently realizes the arrangement of the oil intake chamber and the oil discharge chamber on the outer housing.

First claim

What is claimed is:

1 . An oil supply device for a compressor, comprising: a piston cylinder with an inner chamber, a piston slidingly disposed in the inner chamber, an outer housing cooperating with the piston cylinder; the outer housing comprises a housing body with a housing groove and a separator positioned within the housing groove, the separator has a separation board parallel to the bottom of the housing groove and a partition plate provided on the separation board, forming an oil chamber between the separation board and the bottom of the housing groove; the partition plate is provided in the oil chamber and divides the oil chamber into an oil intake chamber and an oil discharge chamber; both the oil intake chamber and the oil discharge chamber communicate with the inner chamber;
one end of the piston cylinder extends into the housing groove, and fixes the separator against the bottom of the housing groove.

2 . The oil supply device for a compressor according to claim 1 , wherein the opening direction of the housing groove faces the axial direction of the piston cylinder, the separation board is provided with an oil outlet that communicates with the oil intake chamber and an oil discharge inlet that communicates with the oil discharge chamber, wherein the oil outlet and the oil discharge inlet are arranged side by side and are provided with openings along a direction parallel to the axial direction of the piston cylinder.

3 . The oil supply device for a compressor according to claim 2 , wherein the end of the piston cylinder extending into the housing groove is used to abut against the separator; the bottom wall of the piston opposite to the separation board is provided with a piston cylinder oil inlet and a piston cylinder oil outlet which are arranged side by side; the piston cylinder oil inlet is positioned opposite to the oil outlet, and the piston cylinder oil outlet is positioned opposite to the oil discharge inlet.

4 . The oil supply device for a compressor according to claim3 , wherein an oil valve is also provided between the piston cylinder and the separator, the oil valve comprises an oil intake valve plate and an oil discharge valve plate;
the piston cylinder has an oil intake avoidance space opposite to the oil intake valve plate, and the separation board has an oil intake limiting portion for abutting against the oil intake valve plate, wherein the oil intake valve plate blocks the oil outlet in the initial state; the piston cylinder has an oil discharge limiting portion for abutting against the oil discharge valve plate, and the separation board has an oil discharge avoidance space opposite to the oil discharge valve plate, wherein the oil discharge valve plate blocks the piston cylinder oil outlet in the initial state.

5 . The oil supply device for a compressor according to claim 4 , wherein the oil valve comprises a valve seat frame and elastic connection plates provided on the valve seat frame, the oil intake valve plate and the oil discharge valve plate are fixed to the valve seat frame through their respective elastic connection plates; the valve seat frame is clamped and fixed between the piston cylinder and the separation board.

6 . The oil supply device for a compressor according to claim 4 , wherein the size of the piston cylinder oil inlet is larger than that of the oil intake valve plate, the piston cylinder oil inlet forming the oil intake avoidance space;
and the size of the oil discharge inlet is larger than that of the oil discharge valve plate, the oil discharge inlet forming the oil discharge avoidance space.

7 . The oil supply device for a compressor according to claim 5 , wherein the size of the oil inlet is smaller than that of the oil intake valve plate, the oil intake limiting portion is arranged on the separation board and located at the edge of the oil inlet;
and the size of the piston cylinder oil outlet is smaller than that of the oil discharge valve plate, with the oil discharge limiting portion is arranged on the piston cylinder and located at the edge of the piston cylinder oil outlet.

8 . The oil supply device for a compressor according to claim 2 , wherein the partition plate is arranged inclined, the housing body is provided with an oil intake hole communicating with the oil intake chamber and an oil discharge hole communicating with the oil discharge chamber, the oil intake hole and the oil discharge hole opposite each other in the vertical direction; in the lateral direction, the inlet of the oil intake hole is positioned at the center of the bottom surface of the outer housing.

9 . The oil supply device for a compressor according to claim 8 , wherein the oil outlet is provided on the bottom wall of the oil intake chamber, the bottom of the side wall of the oil intake chamber forms an oil inlet communicating with the oil intake hole, and the oil inlet and the oil outlet are misaligned with each other in the lateral direction.

10 . The oil supply device for a compressor according to claim 9 , wherein an arcuate flow guide portion is formed on the side of the partition plate facing the oil intake chamber, one end of the arcuate flow guide portion extends to the oil inlet, and the other end of the arcuate flow guide portion extends above the oil outlet, with the arcuate flow guide portion bends in a direction away from the oil outlet.

11 . The oil supply device for a compressor according to claim 10 , wherein the partition plate has a partition portion located between the oil intake chamber and the oil discharge chamber, a first enclosing plate and a second enclosing plate are set at both ends of the partition portion, the first enclosing plate and the second enclosing plate are integrally formed with the partition portion; the arcuate flow guide portion is arranged on the partition portion facing the oil intake chamber; the first enclosing plate and the second enclosing plate form an S-shape with the partition portion, and both the first enclosing plate and the second enclosing plate abut against the bottom of the housing groove.

12 . The oil supply device for a compressor according to claim 11 , wherein both the first enclosing plate and the second enclosing plate are extended and arranged at an edges of the separation board, and the free end of the first enclosing plate and the partition portion form the oil inlet, the free end of the second enclosing plate and the partition portion form the oil discharge outlet.

13 . A compressor, comprising a compressor housing with a compression chamber, a core assembly located in the compression chamber, and the oil supply device for a compressor according to claim 1 , the core assembly is fixed to the compressor housing by an elastic support part, the oil supply device for a compressor is fixed to the core assembly, the core assembly being provided with a compressor piston cylinder and a driving piston that movable in the compressor piston cylinder, the oil discharge passage communicates with the compressor piston cylinder, and the oil intake passage communicates with the compression chamber.

14 . A refrigeration equipment, comprising a cabinet and a refrigeration system installed on the cabinet, wherein the refrigeration system comprises the compressor according to claim 13 .

Assignees

• Qingdao haier refrigerator co ltd
• Haier Smart Home Co Ltd

Inventors

• Qi Feifei
• Liu Jianru
• Zhang Kui
• Wang Yiming
• Chi hualong

Classifications

• F04B39/0276 Primary

  the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors · CPC title

• F25B31/002

  Lubrication · CPC title

• F04B39/0284

  Constructional details, e.g. reservoirs in the casing (swash-plate compressors F04B27/0878, F04B27/109) · CPC title

• F04B39/02

  Lubrication (of machines or engines in general F01M) · CPC title

• F04B39/0223 Primary

  characterised by the compressor type (swash-plate compressors F04B27/109) · CPC title